Fixes mecha drifting. (#33542)

* Fixes mecha drifting.

code/game/mecha/mecha.dm

@@ -24,7 +24,7 @@
 	infra_luminosity = 15 //byond implementation is bugged.
 	force = 5
 	flags_1 = HEAR_1
-	var/can_move = 1
+	var/can_move = 0 //time of next allowed movement
 	var/mob/living/carbon/occupant = null
 	var/step_in = 10 //make a step in step_in/10 sec.
 	var/dir_in = 2//What direction will the mech face when entered/powered on? Defaults to South.
@@ -502,7 +502,7 @@
 	return domove(direction)
 
 /obj/mecha/proc/domove(direction)
-	if(!can_move)
+	if(can_move >= world.time)
 		return 0
 	if(!Process_Spacemove(direction))
 		return 0
@@ -520,21 +520,19 @@
 		return 0
 
 	var/move_result = 0
+	var/oldloc = loc
 	if(internal_damage & MECHA_INT_CONTROL_LOST)
 		move_result = mechsteprand()
 	else if(dir != direction && !strafe)
 		move_result = mechturn(direction)
 	else
 		move_result = mechstep(direction)
-	if(move_result)
+	if(move_result || loc != oldloc)// halfway done diagonal move still returns false
 		use_power(step_energy_drain)
-		can_move = 0
-		spawn(step_in)
-			can_move = 1
+		can_move = world.time + step_in
 		return 1
 	return 0
 
-
 /obj/mecha/proc/mechturn(direction)
 	setDir(direction)
 	if(turnsound)